In a study described in Cell Host and Microbe, researchers reveal that when red blood cells are infected with the malaria parasite, they activate platelets to secrete the PF4 protein, which triggers ...

Platelets are the smallest of the human blood cells, measuring about one-tenth the diameter of a white blood cell. They usually circulate freely, maintained in a mobile but inactive state by molecules ...

PHILADELPHIA — Blood platelets shore up open wounds and help cuts heal, but they can also cause heart attacks and strokes when a congealed ball of platelets known as a thrombus breaks free from a site ...

A simple blood test for platelet activity at middle age could one day help identify people at risk for Alzheimer's disease ...

San Francisco, CA - Researchers at UCSF have for the first time identified the gene encoding an ADP platelet receptor that is the target of antithrombotic agents. Their report appears in the January ...

Born and Paylirig Wright 1 found that the blood platelets of weanling guinea-pigs fed on a scorbutogenic diet show decreased adhesiveness. These results suggested to them that the haemorrhages of ...

THE term primary or "spontaneous" hemostasis refers to a complex series of biologic events occurring in immediate response to blood-vessel severance or injury. Although damaged or cut blood vessels ...

Ecchymosis occurs when blood leaks from a broken capillary into surrounding tissue under the skin. This causes discoloration. The term ecchymosis describes a flat, blue or purple patch measuring 1 ...

THE following case reports illustrate the dramatic effects of ACTH and of cortisone on the platelets in 3 patients with idiopathic thrombopenic purpura. Case Reports Case 1. C. I. (No. 13998), a ...